void print_out(string names[], int howmanynames)
{
    for( int i = 0; i < howmanynames; i++)
    {
        if(names[i] != names[i+1])
        {
            if(names[i] == names[howmanynames-1])
            {
                cout << names[i];
            }
            else
            {
                cout << names[i] << ", " ;
            }
        }